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Weed & Green Pre-emergent and Post-Emergent Weed Killer

$25

Weight: 32 oz. concentrate Coverage: Treats up to 1,250 sq. ft.

SOLD OUT

Weed & Green Pre-emergent and Post-Emergent Weed KillerWeed & Green Pre-Emergent Weed ControlImage of a man spraying Weed & GreenBack of package for Weed & GreenWeed & Green Pre-emergent and Post-Emergent Weed Killer data sheetWeed & Green Pre-emergent and Post-Emergent Weed Killer data sheetWeed & Green Pre-emergent and Post-Emergent Weed Killer data sheet

Pre-emergent and post-emergent weed killer

Hose-on weed control for lawns that prevents and eliminates weeds while greening your grass blades with iron-nutrient formula.

$25

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Weed & Green Pre-emergent and Post-Emergent Weed KillerWeed & Green Pre-Emergent Weed ControlImage of a man spraying Weed & GreenBack of package for Weed & GreenWeed & Green Pre-emergent and Post-Emergent Weed Killer data sheetWeed & Green Pre-emergent and Post-Emergent Weed Killer data sheetWeed & Green Pre-emergent and Post-Emergent Weed Killer data sheet

Kill weeds, not your lawn

Weed & Green prevents and eliminates weeds while giving you a greener, thicker lawn.

Our dual-action pre-emergent and post-emergent weed control makes eliminating weeds as easy as watering your lawn. Its powerful iron (FeHEDTA) formula quickly greens up your lawn while preventing crabgrass and broadleaf weeds like dandelions from germinating in early spring. It continues to control weeds in your lawn from spring through fall, leaving it healthier and more vibrant than before.

Effective as a pre-emergent against crabgrass and as a pre- and post-emergent on broadleaf weeds like black medic, plantain, thistle, chickweed, creeping buttercup, creeping charlie, dandelion, geranium sp., English daisy, false dandelion, healall, oxalis, speedwell sp/, knotweed, shepherd’s-purse, silverweed cinquefoil, white clover, wild chamomile, as well as moss, liverworts, algae and lichens. It can also control or suppress lawn diseases: dollar spot, rust and/or snow mold.

At Sunday, we create lawn solutions without harsh chemicals—so you can return to enjoying your lawn faster.

Product Features:

  • Preemergent and postemergent
  • Lawn-safe iron formula
  • Prevents crabgrass and broadleaf weeds
  • Controls active weeds, moss, algae and lichen
  • Suppresses lawn disease like snow mold
  • Greens up lawn quickly
  • Easy hose-on application
  • Treats up to 1,250 sq. ft.

Ingredients:

Iron HEDTA (FeHEDTA): High concentration of chelated iron* prevents, controls and suppresses weeds, disease, moss, algae, lichens in lawns.

*Iron may cause temporary discoloration of dormant grass or staining - spray carefully

Instructions:

For best results, follow the product label and treat weeds early spring through fall.

  1. Shake well, attach sprayer to hose and turn on water
  2. Turn nozzle to spray and apply uniformly across lawn, avoid spraying on hard surfaces to prevent staining from iron
  3. Allow lawn to dry fully before returning to use. Wait 24 hours before seeding lawn or applying fertilizer

Application Guidelines:

Pre-emergent use: Apply every 3-6 weeks, up to 2 times per year

Post-emergent use: Apply every 3-4 weeks, up to 4 times per year

Helpful Tips from Yard Advisors:

How does Weed & Green work?

Grass and weeds absorb iron differently. Weeds quickly take in too much iron, which becomes toxic and kills them. Grass absorbs iron more slowly and can tolerate higher amounts. This difference allows us to target weeds effectively and safely while giving your lawn a healthy, deeper green color.

What weeds can I use Weed & Green on?

Weed & Green can be used as a pre-emergent for crabgrass and broadleaf weeds, and as post-emergent for broadleaf weeds, moss, algae, and lichen. It will help to suppress lawn diseases* including dollar spot, rust and snow mold.

*Not for use in California

While it’s effective as a pre-emergent on crabgrass, it won’t control existing crabgrass.

Will this preemergent cause discoloration to dormant lawns?

Weed and Green can be applied before or after weeds begin to emerge. This might mean you’re applying to a dormant lawn - or grass that’s not yet green and actively growing. If your lawn is dormant, Weed & Green may cause temporary discoloration of grass. But don't worry! Any grayish or brown color is temporary, and grass will return to its natural green as it grows.

What’s pre-emergent herbicide? What’s post-emergent herbicide?

A pre-emergent weed killer is designed to prevent weeds from sprouting above ground and works by targeting weeds as they germinate underground.

A post-emergent weed control controls weeds and other plants after they emerge from the soil.

Is there a difference between pre-emergent and post-emergent applications for Weed & Green?

Yes! Temperature and application frequency matter.

  • For pre-emergent control: Apply when soil temps reach 50-55 degrees F, and reapply 3-6 weeks later up to 2 times per year in the same area.
  • For post-emergent control: Apply anytime from spring through fall, and repeat treatment every 3-4 weeks up to 4 times per year in the same area.

Are there any US states where this is not approved for use?

Approved in all states, except CA (pending).

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Bottle of Weed & Green Hose-end Sprayer for Lawns on green lawn

Weed & Green Pre-emergent & Post-Emergent Instructions

Get step-by-step instructions for applying Weed & Green, your selective pre-emergent and post-emergent weed solution. Our lawn-safe iron formula stops weeds before they start and naturally greens up your grass.

Read article

Customer reviews

Based on 241 reviews!
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Sunday F.
Verified Buyer
LocationWaxhaw NC
Great product

This really did a great job in the clovers and weeds. It greened up our grass for spring too!

Published date
05/05/25
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0
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Sunday F.
Verified Buyer
LocationSmyrna GA
Sorry

It did not work for me In fact it seemed to increase the weeds I have had to hire someone to come do it I have sent in pictures and received a 5 lb bag of seed i response

Published date
05/04/25
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0
0
Rachel
Verified Reviewer
LocationIN
COME BACK

I love this! We moved in to an abandoned untamed yard for 2 years. It's work getting the yard right but this helped SOOO much. I need it back! I recommend it but they can't buy it right now😬

Published date
10/07/25
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0
0
George B.
LocationVirginia
Not what I expected

If this priduct is sold out stop advertising or say when it will be available.

Comments by Store Owner on Review by Store Owner on Wed Sep 17 2025
Store Owner
Hi George, we are excited to offer Weed & Green again in the future! We'll be sure to share as soon as it's available for pre-order.
Published date
09/17/25
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0
0
Danielle
Verified Reviewer
LocationSevern, MD
Awesome

I'm finally seeing real grass! The weeds are dying out! I can't wait to see what my lawn looks like next year after all the treatments and care! Your products and instructions makes this newbie feel confident about her green thumb.

Published date
08/29/25
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0
0
Ricardo S.
Verified Reviewer
LocationKaty, TX
Not confident on this product

This is my second year using the Sunday plan. I bought this product to use on my entire yard. This product killed about half my lawn, and my dark green lawn is now grey, brown, and light green. What happens with this product?

Comments by Store Owner on Review by Store Owner on Sat Aug 02 2025
Store Owner
Hi Ricardo, thanks for sharing these photos with us! Have you had the chance to connect with our expert Yard Advisor team? They can take a look and help diagnose what's going on. You can reach them at [email protected] or by calling 415-903-6932.
Published date
08/02/25
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0
0
Catherine A.
LocationFL
Weed care

The weed and grass killer REALLY does what it says, great. Looking for "Weed pre-emergent and post-emergent spray but it has been out of stock for at least two months -- don't know when it will be in supply. Would like to get on some kind of waiting list.

Published date
08/02/25
Was this review helpful?
3
0
Chadillac
Verified Reviewer
LocationNew Jersey
Best weed killer for the lawn

I have begun using organic products expecting them to work but be less effective than chemicals. This was not the case. I was incredibly impressed by the results. Within 24hrs the weeds were gone with one application and no burns to the grass. My only disappointment was that it was sold out on the w...

Published date
07/20/25
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0
0
Sunday F.
Verified Reviewer
LocationCentral Texas
Great Product

Killed the weeds in just 24 hours

Published date
07/18/25
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Ashley
Verified Reviewer
LocationAppleton, WI
A product I will be using again

I’ve been pleasantly surprised by Sunday’s weed & green. The application proved to be a little tricky, only because I couldn’t get the sprayer to work. I think the issue was how the straw was sitting in the bottle, I think it’s too long??? The treatment itself started to work within 24 hours, weeds ...

Published date
07/01/25
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